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//==========================================================================

//

//      plf_misc.c

//

//      HAL platform miscellaneous functions

//

//==========================================================================

// ####ECOSGPLCOPYRIGHTBEGIN####                                            

// -------------------------------------------                              

// This file is part of eCos, the Embedded Configurable Operating System.   

// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.

//

// eCos is free software; you can redistribute it and/or modify it under    

// the terms of the GNU General Public License as published by the Free     

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// version.                                                                 

//

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// ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or    

// FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License    

// for more details.                                                        

//

// You should have received a copy of the GNU General Public License        

// along with eCos; if not, write to the Free Software Foundation, Inc.,    

// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.            

//

// As a special exception, if other files instantiate templates or use      

// macros or inline functions from this file, or you compile this file      

// and link it with other works to produce a work based on this file,       

// this file does not by itself cause the resulting work to be covered by   

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// General Public License v2.                                               

//

// This exception does not invalidate any other reasons why a work based    

// on this file might be covered by the GNU General Public License.         

// -------------------------------------------                              

// ####ECOSGPLCOPYRIGHTEND####                                              

//==========================================================================

//#####DESCRIPTIONBEGIN####

//

// Author(s):    yoshinori sato

// Contributors: yoshinori sato

// Date:         2002-04-05

// Purpose:      HAL miscellaneous functions

// Description:  This file contains miscellaneous functions provided by the

//               HAL.

//

//####DESCRIPTIONEND####

//

//========================================================================*/

#include <pkgconf/hal.h>

#include <cyg/infra/cyg_type.h>         // Base types

#include <cyg/hal/hal_arch.h>           // architectural definitions

#include <cyg/hal/hal_io.h>

#include <cyg/hal/hal_if.h>

#include <cyg/hal/plf_intr.h>

#include <cyg/hal/var_arch.h>

/*------------------------------------------------------------------------*/

void hal_platform_init(void)

{

    hal_if_init();

}

void h8s_reset(void)

{

    __asm__ ("jmp @@4\n\t");

}

/*------------------------------------------------------------------------*/

/* Control C ISR support                                                  */

#if defined(CYGDBG_HAL_DEBUG_GDB_CTRLC_SUPPORT)

struct Hal_SavedRegisters *hal_saved_interrupt_state;

#endif

/*------------------------------------------------------------------------*/

/* clock support                                                            */

void hal_clock_initialize(cyg_uint32 period)

{

    cyg_uint8 prescale;

    cyg_uint8 tmp;

#if CYGNUM_HAL_H8300_RTC_PRESCALE == 8

    prescale = 0x01;

#else

#if CYGNUM_HAL_H8300_RTC_PRESCALE == 64

    prescale = 0x02;

#else

#if CYGNUM_HAL_H8300_RTC_PRESCALE == 8192

    prescale = 0x03;

#else

#error illigal RTC prescale setting

#endif

#endif

#endif

    HAL_READ_UINT8(CYGARC_MSTPCRL, tmp);

    tmp &= ~0x01;

    HAL_WRITE_UINT8(CYGARC_MSTPCRL, tmp);

    HAL_WRITE_UINT8(CYGARC_8TCORA1, period);

    HAL_WRITE_UINT8(CYGARC_8TCNT1, 0x00);

    HAL_WRITE_UINT8(CYGARC_8TCR1, 0x48 | prescale);

    HAL_WRITE_UINT8(CYGARC_8TCSR1, 0x00);

}

void hal_clock_reset(cyg_uint32 vector, cyg_uint32 period)

{

    HAL_WRITE_UINT8(CYGARC_8TCR1,0x00);

    HAL_WRITE_UINT8(CYGARC_8TCSR1,0x00);

    hal_clock_initialize(period);

}

void hal_clock_read(cyg_uint32 *pvalue)

{

    CYG_BYTE val;

    HAL_READ_UINT8(CYGARC_8TCNT1,val);

    *pvalue = val;

}

/*------------------------------------------------------------------------*/

/* End of plf_misc.c                                                      */